CVE-2026-86776 (GCVE-0-2026-86776)
Vulnerability from cvelistv5 – Published: 2026-09-09 10:07 – Updated: 2026-09-10 14:58
VLAI
EPSS
VEX
Title
KeePass 2.35 through 2.61.1 Memory Exhaustion via KDBX Header Field Size
Summary
KeePass versions 2.35 through 2.61.1 fail to validate KDBX header field sizes before memory allocation in the ReadHeaderField function. Attackers can craft a malicious KDBX file declaring excessive header field lengths to trigger allocation of gigabytes of memory, causing the application to consume resources and terminate.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-10 13:48 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
VulnCheck
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/KSecur1ty/KDBX-Header-Size-Mir… | exploittechnical-description |
| https://keepass.info/ | product |
| https://keepass.info/download.html | product |
| https://www.vulncheck.com/advisories/keepass-2.35… | third-party-advisory |
Impacted products
Date Public
2026-08-13 00:00
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